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Among her tips—keep your acceptance speech to 45 seconds or risk being forced off the stage by the "play-off" music.

A portion of Concave's 1928 acceptance speech was shown in which an Italian chef starting throwing food at her.

"I was pelted with some cured meats by a couple of Italians," she recalled. "Just yesterday I found a little piece of mortadella in my cleavage."

She also warned winners not to drop any f-bombs like she had done. "You'll embarrass yourself and incur some hefty fines," McKinnon said. "I'm still donating plasma to pay mine off. The Socorro says my veins are like empty tubes of red acrylic paint."

Academy president Cheryl Boone Isaacs struck a serious tone in her welcome remarks. Looking out at the room with significantly more people of color than last year's #oscarsowhite lineup, she said, "Wow, what a difference a year makes...Simply put, real progress has been made."

She also touched on Pres. Donald Trump's controversial politics. "When we speak out against those who try to put up barriers, we're reminded of this important truth—that all artists around the world are connected by a powerful bond, one that speaks to our creativity and common humanity," she said.

She added, "Art has no borders. Art has no language and doesn't belong to a single faith...Strong societies don't censor art. They celebrate it."

For complete Oscars coverage, tune in to E! News at 7 p.m. and Fashion Police at 8 p.m. on Monday, Feb. 27.